Hi folks; the icon for Slack (https://slack.com/) is a larger format than the rest of the icons in the system tray on Breeze Dark (and Breeze for that matter) themes. Is there a way to make that icon more uniform (or, if this icon is supplied by Slack for the system tray, is there a way to override it with a new icon?)

hey there, you can customize slack's emojis. But you can not modify slack's icon.